A film about the history of Mongolia, its successful development. Mongolia. Landscapes of mountains, steppes, rivers, deserts. Fishermen catch fish. Hunters with furs. Sheep breeding. Cows on the farm. Veterinarians examine animals. Agricultural machinery in the field. Mechanized watering of vegetables. Experimental station for the cultivation of oilseeds. Harvesting apples. Ulan Bator city. Citizens on the streets of the city. View of modern buildings. Palace of Culture. University building. Flags at the building of the Academy of Sciences. Scientists at work. Observatory with new equipment. Production processes in the shops of the dairy and meat processing plant. Food and light industry products. Temple of Bogdogegen. TV tower. The city of Darkhan. Railway junction. Reinforcement plant. Construction site. Thermal power plant. Choibalsan city. General view of the city (aerial photography). People on the streets. Newsreels, before 1921: the production of flour, belts in pre-revolutionary Mongolia; worker descends into the mine.